I have a goodman model GMS91155DXA . The red light keeps flashing in 3's . IT signals that the pressure switch is stuck open. Where is the pressure switch and how do i close it? THE fan blows cool air for at least 30 mins
Heating & Cooling - Goodman
Answers & Comments
Hi,
Here is a tip that will help you try to figure out why your furnace is not working.
Basic Furnace or Heating System Troubleshooting
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